While I do not know of anybody personally, I know that a substantial number of the CS majors at UIC start at one of the Chicago City Colleges CCs (my wife was faculty at UIC for a long time). They are pretty successful.
However, there can be an issue with having to take all of the high intensity math and CS courses in two years. Most CS programs will accept most gen-ed courses from CCs, but will only rarely (if at all) accept any courses for the major, including all of the required math courses.
So while it can be a much cheaper option, it is an option that requires a pretty intense junior and senior year, academically.